Question

please help I suck at math.

Answer 1

(1)

Given 9^(4n) = 81

= > $(3^2)^{4n} = (3)^4$

= > $3^{8n} = 3^4$

= > 8n = 4

= > n = 1/2.



(2) 

Given Principal = 1500

Time t = 4 years.

n(number of times compounded per year) = 4 years.

The rate of interest r = 2.5%


We know that A = P(1 + r/n)^n * t

                            = 1500(1 + 0.025/4)^4 * 4

                            = 1500 * (1.00625)^16

                            = 1500 * 1.10483

                            = 1657.24



Hope this helps!

Answer 2

Hi,

Please see the attached file!


Thanks